LTC5584 Datasheet | Linear Technology

Features n I/Q Bandwidth of 530MHz or Higher n High IIP3: 31d Bm at 450MHz, 28d Bm at 900MHz n High IIP2: 70d Bm at 450MHz, 65d Bm at 900MHz n User Adjustable IIP2 to >80d Bm n User Adjustable DC Offset Null n High Input P1d B: 13.1d Bm at 900MHz n Image Rejection: 45d B at 900MHz n Noise Figure: 9.9d B at 450MHz 10d B at 900MHz n Conversion Gain: 5.4d B at 450MHz 5.7d B at 900MHz n Shutdown Mode n Operating Temperature Range (TC): - 40°C to 105°C n 24-Lead 4mm × 4mm QFN Package Applications n LTE/W-CDMA/TD-SCDMA Base Station Receivers n Wideband DPD Receivers n Point-To-Point Broadband Radios n High Linearity Direct Conversion I/Q Receivers n Image Rejection Receivers LTC5584 30MHz to 1.4GHz IQ Demodulator with IIP2 and DC Offset Control Description The LTC®5584 is a direct conversion quadrature demodulator optimized for high linearity receiver applications in the 30MHz to 1.4GHz frequency range. It is also usable in the 10MHz to 30MHz and 1.4GHz to 2GHz ranges with reduced performance. It is suitable for munications receivers where an RF signal is directly converted into I and Q baseband signals with bandwidth of 530MHz or higher. The LTC5584 incorporates balanced I and Q mixers, LO buffer amplifiers and a precision, high frequency quadrature phase shifter. In addition, the LTC5584 provides four analog control voltage interface pins for IIP2 and DC offset correction, greatly simplifying system calibration. The high linearity of the LTC5584 provides excellent spurfree dynamic range for the receiver. This direct conversion demodulator can eliminate the need for intermediate frequency (IF) signal processing, as well as the corresponding requirements for image filtering and IF filtering. These I/Q outputs can interface directly to channel-select filters (LPFs) or to baseband amplifiers. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the...